Pulp horn that is most likely to be exposed during cavity preparation on deciduous molars is:

 # Pulp horn that is most likely to be exposed during cavity preparation on deciduous molars is:

A. Mesiobuccal of first molar

B. Distobuccal of first molar

C. Mesiobuccal of second molar

D. Distobuccal of second molar

The correct answer is A. Mesiobuccal of first molar

The mesiobuccal pulpal horn of the primary first molars occupies a prominent portion of the pulp chamber. It is the largest pulp horn in both the maxillary and mandibular first primary molar and is commonly exposed during cavity preparation.

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